Heater for fluid mediums.



R. W. FORD.

HEATER FOR FLUID MEDIUNIS.`

APPLICATION FILED .IULY 21.1914.

Patented Nov. 16, 1915.

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i? 0 22 ZZ? made to the drawings by which it is accom-V ROBERT W. FORD, or VANCOUVER, BRITISH COLUMBIA, CANADA.

i HEATER FOR FLUID MEDIUMS.

Specification of Letters Patent.

ratenteanov. ic, iai.

Application led July 21, 1914. Serial No. 852,290.

To all whom t may concern.'

Be it known that I, ROBERT W. FORD, a subject of the King of Great Britain, residing at Vancouver, in the Province of British Columbia, Canada, have invented certain new and useful Improvements in Heaters for Fluid Mediums, of which the following is a specification.

rIhis invention relates to a heating device of that class wherein the heat of combustion of the fuel is imparted to a fiuid medium by` which the heat may be distributed and circulated through a house or building.

The objectof the invention is to obtain such delivery of the heated gases from the combustion chamber, and such circulation of the distributing medium past the surfaces of the heated flue that an economical abstraction of the heat may be obtained. Y'Ihis result is attained by conducting the products of combustion, preferably of aliquid `or gaseous fuel, along a suitably baffled substantially horizontal flue leading from the chamber in which combustion occurs, tothe place of exit to the chimney. Y

The combustion chamber and the flue are surrounded with a jacket space through which a heat distributing and circulating.

medium, such as water or air, is induced to move in a direction opposite to that of the products of combustion, with provision enabling the medium as heated to circulate past a surface from which it may absorb further heat. With this arrangement the medium, as it is heated, is not, as frequently occurs in heaters of this class, moved past less heated parts to which it may return a portion of the heat previously derived.

The invention is particularly'described in the following specification, reference being panied, in which:

Figure 1 is a vertical longitudinal section through the heater showing the application of the principle to the use of afluid medium such as water. Fig. 2 is a sectional plan of the same. Fig. 3, a vertical cross section through the combustion .chamber on the line A A. in Fig. 1, and Fig. 4, a vertical cross section on the line B B on the same figure.

In these drawings 2 represents a shallow cylindrical combustion chamber into which the oil or gaseous fuel with the air for combustion, is delivered through a central aperture 3 in the bottom. From the upper part of this combustion chamber 2 a horizontally elongated flue 4 is connected, which flue is substantially rectangular in cross section and has a width greater thanV that of the combustion chamber which it intersects, and a depth which is relatively shallow. From the upper side of this flue a domed crown 5 projects upward over the combustion chamber with which it is concentric, and at the other end the fiue delivers through an uptake 6 to the chimney.

The horizontal flue is of sufficient length to enable all available heat to be abstracted from the products of combustion. It is provided With a series of baffles 7 each offering a concave surface toward the combustion chamber 2 and terminating alternately adjacent to the middle line to leave a passage 8 and adjacent to each side of the fuel to leave a passage 9 o-n each side. The products of combustion will Ithus be materially checked in their progress to the uptake 6 and will be compelled to travel back and forth across the Width of the flue 4.

Where the fuel `to rbe used is such as will form a deposit in the flue 4 the baflies 7 of that flue, which are shown in the drawing as forming a part of and downwardly projecting from the top plate of the flue, will be` separate therefromand will be connected to gether on a longitudinal frame so as to be removable through the end of the flue adjacent to the uptake which flue end will be produced through that end'of the heater for that purpose and be closable with a removable plate. o

The shell 20 by which the combustion chamber 2 and its flue 4 are inclosed provides a water space 11 12 surrounding their top, bottom and sides, that space `11 beneath the flue 4 and around the lower part of the combustion chamber being separated from the upper space 12 by'a horizontal partition 21 which is outwardly fianged froln the castment the pipe 16 to the circulating system is connected. The depth of the upper water space 12 is uniformly increased from the end adjacent to the inlet 10 to the end on which 'is the delivery dome 15.

Extending around the domed crown of the combustion chamber opposite to that side of it from whichrthe Huepl extends, is a baille 17, the sides of which baffle are curved downwardtoward the Hue, and this baHle 17 is hooded partially over the domed crown. A baHle 19 is carried over the length of the Hue 4, the sides of which baille are curved downward toward the Hue and this baille is angled lslightly upward toward the dome 15 of the outlet. This water space baffle 19 may be continuous throughout its length or may be made in two or more sections each separately sloped upward toward the outlet.

The top vandsides of the outer shell of the heater are covered with a heat non-conductv ing casing 22 which is supported on webs 23 upwardly projecting from the shell 20 so as to provide a non-circulating air space 24: be-

tween the shell and Vthe external casing. vWith this design the products of combustion from the chamber 2 are checked in their ac i i cess-to the uptake 6 by the bailies 7 and are diverted back and forth between the middle and the sides across the width of the Hue. rlhe heating medium is admitted at 10 to the lower end of the heater farther fromthe lcombustion chamber and al portion of it is directed along the bottom of the Hue so that ritcomes first in lcontact with the cooler' part of it -and later with the walls of the com bustion chamber before delivery through the apertures 14. -A portion of the entering Huid is admitted at the cooler end through the apertures 13V to the space 12 above the Hue 4 and becomes gradually heated in its progress toward .the combustion chamber end where the greater heat is experienced and' from which it rises to the outlet 15.

Although particularly described and illustrated as applicable to a water heater the same general principle of design is applicable to where air is the heat distributing medium, with such modiiication in the construction of the Hues and jacket spaces, as may be desirable in providing for the heating and circulation of an elastic fluid medium, such as air. i.

Having now particularly described my inventlon, I hereby declare-that what I claimas new and desire to be protected in by-Letl ters Patent, is:

vthe combustion chamber at theV base of its Y crown and extending therefrom to the chimney; uptake said Hue having curved -baiiies the concavity of which is directed toward the combustion chamber and the alternative baf Hes hav-ing apertures in the middle and at the sides of the Hue, a heat non-conducting casing inclosing a space around the combustion chamber and Hue, a partition horizolb tally dividing this space in the plane of the bottom of the Hue, apertures in this partition adjacent to the uptake and adjacent to the combustion chamber, an inlet delivering the Huid medium to be heated adjacent to the Hue uptake, and an outlet for the heated medium from the heater adjacent to the combustion chamber.

2. A Huid heater, comprising the combina'- tion with a shallow cylindrical combustion chamber the axis of which is vertically disposed said combustion chamber having a domed crown, and an elongated shallow Hue of rectangular cross section intersecting' the combustion chamber at the base of its crownplate and extending horizontally to the chime ney uptake, a casing inclosing the combustion chamber and its Hue, a horizontal partition dividing this space in the approximate plane ofthe bottom of the Hue which parti-- tion is: provided with apertures adjacent to' the uptake and adjacent to the combustion chamber, an inlet admitting a Huid medium' into the space beneath the Hue adjacent to the uptake, an outlet over the combustion chamber delivering the heated medium, a hooded baille in the Huid space around the side of the combustion chamber opposite to the Hue and baHles over the crown plate of the Hue sloping upward toward the Huid outlet.

3. A Huid heater comprising the combination of a combustion chamber, an elongated relatively shallow Hue extending with its upper and lower walls in parallel horizontal planes from adjacent to the crown of the combustion chamber, and connected at their end to the chimney uptake, a casing inclosing a space around the combustion chamber and the Hue, and an outer shell inclosing said casing, an inlet for delivering Huid medium to be heated into the lower part of said casing adjacent to the uptake, and an outlet for the heated-Huid medium over the combustion chamber.

4l. A Huid heater comprising the combination of a combustion chamber, an 'elongated relatively shallow Hue extending with its upper and lower walls in parallel horizontal planes from adjacent to the crown of the combustion chamber, and connected at their end to the chimney uptake, a casing inclosing a space around the combustion chamber and the Hue, and an outer shell inclosing said casing, an inlet for delivering Huid medium to be heated into the lower part of said casing adjacent to the uptake, an outlet for the heated Huid medium over the combustion chamber, the upper wall of said casing inclining upwardly from the uptake end toward the combustion chamber end, said combustion chamber including a dome top and a, hooded baie over said dome top Within said casing, and a horizontal baHe Within said casing over said flue, substantially as described.

In testimony whereof I aix my signature in presence of tWo Witnesses.

ROBERT W. FORD.

Wvitnesses ROWLAND BRITTAIN, MAY WHYTE.

Copies of this patent may be obtained for five cents each, {by addressing the Commssionei` of Patents; Washington, I). G. 

